Region
United States --
21
United States
16
China
4
China --
4
Europe
2
Europe --
2
Islamic countries
2
Islamic countries --
2
Japan
2
Japan --
2
Asia, Southeastern
1
Asia, Southeastern --
1
Developing countries
1
Developing countries --
1
East Asia --
1
Foreign countries
1
Great Britain
1
Great Britain --
1
Iran
1
Iran --
1
Israel
1
Israel --
1
Libya --
1
Malaysia
1
Malaysia --
1
Middle East
1
Middle East --
1
Palestine
1
Persian Gulf Region --
1
Saudi Arabia
1
Saudi Arabia --
1
Soviet Union
1
Soviet Union --
1
Sudan --
1
United states --
1